. Clean air protection problems at national parks and wilderness areas : hearing before the Environment, Energy, and Natural Resources Subcommittee of the Committee on Government Operations, House of Representatives, One Hundred Third Congress, second session, April 29, 1994. Air -- Pollution Physiological effect United States; Air -- Pollution United States Prevention; Air quality management -- United States; Environmental monitoring -- United States; National parks and reserves -- United States; Wilderness areas -- United States. 92 Department of Environmental Sciences Clark Hall . Universit
. Clean air protection problems at national parks and wilderness areas : hearing before the Environment, Energy, and Natural Resources Subcommittee of the Committee on Government Operations, House of Representatives, One Hundred Third Congress, second session, April 29, 1994. Air -- Pollution Physiological effect United States; Air -- Pollution United States Prevention; Air quality management -- United States; Environmental monitoring -- United States; National parks and reserves -- United States; Wilderness areas -- United States. 92 Department of Environmental Sciences Clark Hall . University oi Virginia . Charlottesville. Virginia . 22903 F«# (804) 982-2137 (804)924-7761 Testimony to the Committee on Government Operations, House of Representatives April 29, 1994 Patrick J. MichaeJ Associate Professor of Environmental Sciences University of Virginia Virginia State CLimatologist ********* This testimony is presented on behalf of the Commonwealth of Virginia by the Virginia State Climatologist. The State Climatologist is an Associate Professor of Environmental ' Sciences at the University of Virginia, and this testimony is also tendered with the traditional protection of academic freedom. ********* Thank you for soliciting my testimony on the topic of air quality and visibility. I believe it is fair to say that the perception of declining visibility has been one of the most potent political forces empowering related environmental legislation and regulation. This is particularly true in the eastern United States. The perception that visibility in our premier National Parks, such as the Shenandoah, is declining dramatically, is one with particularly important economic and policy implications, for the Shenandoah is one of our most frequently visited National Parks, with close proximity to the Washington metropolitan area. As Virginia's State Climatologist and a resident of the Shenandoah Valley, I share your concern for the Park. As a research scientist I also ha
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